Hi Arno, On Wed, Sep 07, 2011 at 08:20:22AM +0200, Arno Steffen wrote: > Hi Marek and Wolfgang, Thanks for your answers. > I kept already one sector space for bad blocks, so 1st environment is > at c.0000, 2nd at 10.0000. Blocksize is 2.0000 (so 1 block left). > Maybe I have to announce uboot, that there is one block more > available. But how, in wich defininition? I can declare size (which is > just 8k) and blocksize (128k), but not block number ?!? > I found that this below more or less relates to environment: Maybe I > miss something here? Some look redundant to me. I adopted this from > another board included in uboot, just changed size,location and > redundancy. > > #define CONFIG_ENV_SIZE (8 << 10) /* 8 KiB */ > #define CONFIG_SYS_MALLOC_LEN (CONFIG_ENV_SIZE + (128 << 10)) > #define CONFIG_SYS_GBL_DATA_SIZE 128 /* bytes reserved for */ > > #define SMNAND_ENV_OFFSET 0x0C0000 /* environment starts here */ > > #define CONFIG_SYS_ENV_SECT_SIZE boot_flash_sec > #define CONFIG_ENV_OFFSET boot_flash_off > #define CONFIG_ENV_ADDR boot_flash_env_addr > > #define CONFIG_SYS_REDUNDAND_ENVIRONMENT > #define CONFIG_ENV_OFFSET_REDUND 0x100000 > #define CONFIG_ENV_SIZE_REDUND (CONFIG_ENV_SIZE)
this is my adapted openrd configuration: #define CONFIG_ENV_IS_IN_NAND 1 #define CONFIG_ENV_SECT_SIZE 0x20000 /* 128K */ #define CONFIG_ENV_SIZE 0x20000 /* 128k */ #define CONFIG_ENV_ADDR 0x60000 #define CONFIG_ENV_OFFSET 0x60000 /* env starts here */ #define CONFIG_ENV_RANGE (6 * CONFIG_ENV_SIZE) #define CONFIG_ENV_OFFSET_REDUND (CONFIG_ENV_OFFSET + CONFIG_ENV_RANGE) It is too long ago I made this modification, so I am not sure (but of course hope so) that CONFIG_ENV_SIZE_REDUND does not have to be explicitly specified. Concerning your hint about making CONFIG_ENV_SIZE smaller: there is a comment in the original openrd_base.h config file /* * max 4k env size is enough, but in case of nand * it has to be rounded to sector size */ and I simply adhered to it. It is not clear to me if this is really a requirement or just made for convenience (having overview over the flash usage layout). Up to now, I did not have any problems with this setup on something like 100+ boards. Best regards, Wolfgang _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
